- Kenneth Tobey
- Col. Patrick Hendry
- Brinke Stevens
- Dr. Nikki Carlton
- R.G. Wilson
- Sheriff Lance Boiler
- John Goodwin
- Agent Jeff T. Stewart
- Cathy Cahn
- Connie Lingus
- Forrest J. Ackerman
- Flustered Man
- John Agar
- Dr. Clete Ferguson
- Michelle Bauer
- Second Mom
- Bob Burns
- Admiral Burns / Tracy the Gorilla
- Jeanne Carmen
- Mrs. Lipschitz
- Robert Clarke
- Major Allison
- Robert Cornthwaite
- Dr. Carrington
- George Fenneman
- Narrator
- John Harmon
- Mr. Lipschitz
- Paul Marco
- Kelton the Cop
- Lori Nelson
- Dr. Helen Dobson
- Linnea Quigley
- Deaf Girl
- Daniel Roebuck
- Capt. Company
- Ann Robinson
- Dr. Sylvia Van Buren
- Gloria Talbott
- Nikki's Mom
- Les Tremayne
- General Mann
- Whitney McClennan
- Sensible Daughter
- Simone Swinson
- Monsterama Victim
- Nathaniel Scriven
- Titanic Young Man
- Stacia Montieth
- Titanic Young Girl
- Peter Atkins
- Titanic Captain
- Arnold Duong
- Titanic Chinese Cook
- Kim Delgado
- Normal Sub Captain
- Jordan Steele
- Sub-normal Bo'sun
- Debra Berwick
- Sunbather / First Mom
- Craig Muckler
- Punk Car Thief
- Bryan Moore
- Deaf Boy / Screaming Townsfolk
- Irvin Berwick
- Radio Voice
- Trudi Jo Marie Keck
- Heidi Mittleschmertz
- Ted Newsom
- Hospital Orderly
- Wayne Berwick
- Loon
- Rick Meyer
- Loon / Mailman Stick Poker
- Mondo Sylvestri
- Loon
- Sean O'Bannon
- Czech Tech / Mook #2 / Jet Pilot
- Richard McEnroe
- Mook #1
- Jimmy Williams
- Sgt. Paisley / Screaming Townsfolk
- Gregory Kirkman
- Private Krelboin
- Brady Hicks
- Lt. Nyby
- Phillip Dye
- Biplane Pilot / Monstersaurus - Erectus
- Gerald Brodin
- Major Trauma / Dr. Fine
- David Ortegon
- Indian Scout
- Jumbo Kondo
- Dr. Yashiwara
- Whitney Scott Bain
- Schmuck with Sign
- Tom Khamis
- Star Trek Schmuck / Monstersaurus
- Kelly Waldman
- Army Stick Poker
- Robert Weaver
- Foreman Gorman
- Tim Murphy
- Tank Commander / Screaming Townsfolk
- Tim Sullivan
- Dr. Howard
- Richard Nathan
- Dr. Howard
- Sterling Powers
- New Coffee Secretary
- Jason Sechrest
- Cat Scan Tech
- Doug Hart
- Thermometer Tech #1
- George Balakiryan
- Thermometer Tech #2
- Jennifer Lazo
- Butch Fire Chief
- Jon Trapnell
- Available Eunuch
- Bill Warren
- Panicked Man
- Beverly Warren
- Panicked Man
- Stuart Galbraith IV
- Not So Panicked Man
- Danny Berwick
- Baby
- Milos
- Guy with Honey
- Tina Cheri
- Honey
- Bryan Knowles
- Horn Honking Jerk / Monstersaurus
- Jay Trapnell
- Blind Mobil Attendant
- Al Jean
- Beer Drinker
- Lou Cohen
- Pot Smoker
- Mike Reiss
- Oil Can Guzzler
- Julee Cohen
- Screaming Woman
- Ja'mie Cohen
- Screaming Girl
- Debbie Watson
- Screaming Babe / Screaming Townsfolk
- Lonn Friend
- Crushed Man
- Chris Mastalir
- James Deanold
- Robert White Cox
- Torch Pitchman
- Ron Ford
- Singing Pitchman
- Don Adams
- Screaming Townsfolk
- Barbara Alcala
- Screaming Townsfolk
- Brian Benison
- Screaming Townsfolk
- J.R. Bookwalter
- Screaming Townsfolk
- Del Howison
- Screaming Townsfolk
- Eric Ige
- Screaming Townsfolk
- William Lantry
- Screaming Townsfolk
- T.K. Malone
- Screaming Townsfolk
- Tom Rosholt
- Screaming Townsfolk
- Cindy Watson
- Screaming Townsfolk
- Jeff Swenty
- Monstersaurus
- Franklin Ruehl
- Doubtful
